/* =========================================================================
   Ellis Victoria — Case Study pages (v2 dark / motion)
   Shared styles for all v2/work-*.html detail pages
   ========================================================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0a0a0a;
  --white: #f5f5f0;
  --cyan: #00ffb3;
  --blue: #2440ee;
  --mid: #141414;
  --muted: #8a8a82;
  --border: rgba(245,245,240,0.1);
  --font-display: 'Clash Display', sans-serif;
  --font-body: 'General Sans', sans-serif;
  --radius: 10px;
}

/* ── LIGHT THEME ───────────────────────────────────────────────────── */
[data-theme="light"] {
  --black: #f4f4ef;
  --white: #14140f;
  --mid: #ffffff;
  --muted: #5c5c55;
  --border: rgba(10,10,10,0.14);
  --cyan: #0a8f63;
}
[data-theme="light"] .nav.scrolled { background: rgba(244,244,239,0.72); }
[data-theme="light"] .nav::before { background: linear-gradient(to bottom, rgba(244,244,239,0.85), transparent); }
[data-theme="light"] .cs-meta-cell { background: rgba(255,255,255,0.72); }
[data-theme="light"] .cs-prose p { color: rgba(20,20,15,0.82); }

/* ── THEME TOGGLE ──────────────────────────────────────────────────── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  pointer-events: auto;
}
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: rgba(245,245,240,0.06);
  color: var(--white);
  cursor: none;
  transition: background 0.3s, border-color 0.3s, color 0.3s, transform 0.3s;
}
.theme-toggle:hover { border-color: var(--cyan); color: var(--cyan); transform: rotate(-15deg); }
[data-theme="light"] .theme-toggle { background: rgba(10,10,10,0.05); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }
@media (pointer: coarse) { .theme-toggle { cursor: pointer; } }

html { scroll-behavior: auto; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  cursor: none;
}

@media (pointer: coarse) {
  body { cursor: auto; }
  .cursor, .cursor-dot { display: none !important; }
}

::selection { background: var(--cyan); color: var(--black); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }

.skip-link {
  position: absolute;
  left: 1rem; top: -4rem;
  z-index: 9999;
  background: var(--cyan);
  color: var(--black);
  padding: 0.6rem 1.2rem;
  font-size: 0.8rem;
  border-radius: var(--radius);
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .fade-up, .cs-title-line span { opacity: 1 !important; transform: none !important; }
  .loader { display: none !important; }
}

/* ── CANVAS / GRAIN / CURSOR ───────────────────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}
.page { position: relative; z-index: 1; }

.grain {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9000;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.cursor {
  position: fixed; top: 0; left: 0;
  width: 14px; height: 14px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  will-change: transform;
  transition: width 0.25s, height 0.25s, background 0.25s;
}
.cursor.hovering {
  width: 56px; height: 56px;
  background: rgba(0,255,179,0.1);
}
.cursor-dot {
  position: fixed; top: 0; left: 0;
  width: 4px; height: 4px;
  background: var(--cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  will-change: transform;
}

/* ── PROGRESS BAR ──────────────────────────────────────────────────── */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 100%;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  z-index: 200;
}

/* ── LOADER ────────────────────────────────────────────────────────── */
.loader {
  position: fixed; inset: 0;
  background: var(--black);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.loader-text {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 500;
}

/* ── NAV ───────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 3rem;
  pointer-events: none;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, padding 0.4s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10,10,10,0.7);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}
.nav::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 130px;
  background: linear-gradient(to bottom, rgba(10,10,10,0.75), transparent);
  pointer-events: none;
  z-index: -1;
  transition: opacity 0.4s ease;
}
.nav.scrolled::before { opacity: 0; }
.nav > * { pointer-events: auto; }
.nav-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}
.nav-back {
  font-size: 0.8rem;
  color: var(--white);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap 0.3s;
}
.nav-back:hover { gap: 0.85rem; }

/* ── HERO ──────────────────────────────────────────────────────────── */
.cs-hero {
  min-height: 90vh;
  min-height: 90dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem 3rem 4rem;
}
.cs-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 2rem;
}
.cs-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 9vw, 8rem);
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: -0.03em;
}
.cs-title-line { display: block; overflow: hidden; }
.cs-title-line span { display: inline-block; transform: translateY(110%); }
.cs-title .outline { color: transparent; -webkit-text-stroke: 1.5px var(--white); }
.cs-subtitle {
  margin-top: 2.5rem;
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 50ch;
  line-height: 1.7;
}

/* ── META BAR ──────────────────────────────────────────────────────── */
.cs-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cs-meta-cell {
  background: rgba(10,10,10,0.7);
  backdrop-filter: blur(6px);
  padding: 2rem;
}
.cs-meta-key {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.6rem;
}
.cs-meta-val {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
}

/* ── BIG VISUAL ────────────────────────────────────────────────────── */
.cs-visual {
  margin: 6rem 3rem;
  height: 70vh;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}
.cs-visual img,
.cs-visual-placeholder {
  width: 100%; height: 100%;
  object-fit: cover;
  will-change: transform;
}

/* ── SECTIONS ──────────────────────────────────────────────────────── */
.cs-section { padding: 6rem 3rem; }
.cs-label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.5rem;
}
.cs-heading {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 500;
  line-height: 1.05;
  margin-bottom: 2.5rem;
}
.cs-heading em { font-style: normal; color: var(--cyan); }
.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}
.cs-prose p {
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(245,245,240,0.78);
  margin-bottom: 1.25rem;
  max-width: 60ch;
}
.cs-prose p:last-child { margin-bottom: 0; }
.cs-prose strong { color: var(--white); font-weight: 600; }
.cs-prose em { font-style: normal; color: var(--cyan); }

code {
  font-family: 'SFMono-Regular', ui-monospace, 'Menlo', 'Consolas', monospace;
  font-size: 0.85em;
  color: var(--cyan);
  background: rgba(0,255,179,0.08);
  border: 1px solid rgba(0,255,179,0.16);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  white-space: nowrap;
}

/* ── FEATURE GRID (cards) ──────────────────────────────────────────── */
.cs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 3rem;
}
.cs-grid-item {
  background: var(--black);
  padding: 2.5rem;
}
.cs-grid-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--cyan);
  margin-bottom: 1.25rem;
}
.cs-grid-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}
.cs-grid-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ── OUTCOMES ──────────────────────────────────────────────────────── */
.cs-outcomes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 3rem;
}
.cs-outcome {
  background: var(--black);
  padding: 2.5rem 2rem;
}
.cs-outcome-num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 600;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: 0.75rem;
}
.cs-outcome-label {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ── TAGS ──────────────────────────────────────────────────────────── */
.cs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 3rem;
}
.cs-tag {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--muted);
}

/* ── NEXT PROJECT ──────────────────────────────────────────────────── */
.cs-next {
  padding: 8rem 3rem;
  border-top: 1px solid var(--border);
  text-align: center;
}
.cs-next-label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.cs-next-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 6rem);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.02em;
  transition: color 0.3s;
}
.cs-next-link:hover .cs-next-title { color: var(--cyan); }
.cs-next-arrow {
  display: inline-flex;
  margin-top: 2rem;
  width: 64px; height: 64px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  transition: background 0.3s, color 0.3s;
}
.cs-next-link:hover .cs-next-arrow {
  background: var(--cyan);
  color: var(--black);
}

/* ── FOOTER ────────────────────────────────────────────────────────── */
.footer {
  padding: 2rem 3rem;
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

/* ── FADE UP ───────────────────────────────────────────────────────── */
.fade-up { opacity: 0; transform: translateY(40px); }

/* ── FIGURE (diagram / supporting images) ──────────────────────────── */
.cs-figure {
  margin: 2rem 0 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.cs-figure img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.cs-figure.is-contained img {
  max-width: 620px;
}
.cs-figure--zoom {
  overflow: hidden;
  border-radius: var(--radius);
}
.cs-figure--zoom img {
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.cs-figure--zoom:hover img {
  transform: scale(1.06);
}
.cs-two-col .cs-figure {
  align-self: center;
  margin-top: 0;
}

/* ── RESPONSIVE ────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav { padding: 1.5rem 1.5rem; }
  .cs-hero { padding: 7rem 1.5rem 3rem; }
  .cs-meta { grid-template-columns: repeat(2, 1fr); }
  .cs-visual { margin: 4rem 1.5rem; height: 50vh; }
  .cs-section { padding: 4rem 1.5rem; }
  .cs-two-col { grid-template-columns: 1fr; gap: 2rem; }
  .cs-grid { grid-template-columns: 1fr; }
  .cs-outcomes { grid-template-columns: repeat(2, 1fr); }
  .cs-next { padding: 5rem 1.5rem; }
  .cs-figure { margin: 3rem 0 0; }
  .footer { padding: 1.5rem; flex-direction: column; gap: 0.5rem; }
}

@media (max-width: 600px) {
  .cs-title { font-size: clamp(2.2rem, 12vw, 4rem); }
  .cs-outcomes { grid-template-columns: 1fr 1fr; }
}